Book excerpt: Supervising Principals for Instructional Leadership specifies the conditions that district leaders can create to help principal supervisors take a teaching and learning approach to their work. Based on their extensive research in district central offices, Meredith I. Honig and Lydia R. Rainey show how supervisors can most effectively support principals in becoming instructional leaders and developing the capacity to lead their own learning. "Supervising Principals for Instructional Leadership is a brilliant, inspiring, clear book that nails what it means to supervise school leaders for growth and helps the reader reimagine the role of the central office. Read this book, and use it immediately!" --Michael Fullan, professor emeritus, Ontario Institute for Studies in Education, University of Toronto "What does it look and sound like to support principals to lead learning? Honig and Rainey share their research-and-practice-tested wisdom, which combines the imagination to break free of conventional supervision with clear examples of what to do and what not to do, and a bundle of tools to make it happen." --Elizabeth A. City, senior lecturer on education, Harvard Graduate School of Education "For too long the work of principal supervision has been a black box; Honig and Rainey open up that box and provide practical steps for system leaders to take to support principals so that instruction improves for every child in every school. Their systemic approach is a must-read for any public education leader." --Joshua P. Starr, chief executive officer, PDK International "This finely crafted book about a critical school improvement problem is guided by a strong theory, builds on an impressively rich body of evidence, and includes many practical illustrations of the guiding theory in action. District leaders aiming to improve instruction in their schools will find much of value to their efforts in this text." --Kenneth Leithwood, emeritus professor, Ontario Institute for Studies in Education, University of Toronto Meredith I. Honig is a professor of Education Policy, Organizations, and Leadership at the University of Washington, Seattle. Lydia R. Rainey is a research scientist at the University of Washington, Seattle, and the director of research for the District Leadership Design Lab.